/*
 * Copyright 2016-2018 shardingsphere.io.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * </p>
 */

package io.shardingsphere.api.algorithm.masterslave;

import java.util.List;
import java.util.Random;

/**
 * Random slave database load-balance algorithm.
 *
 * @author zhangliang
 */
public final class RandomMasterSlaveLoadBalanceAlgorithm implements MasterSlaveLoadBalanceAlgorithm {
    
    @Override
    public String getDataSource(final String name, final String masterDataSourceName, final List<String> slaveDataSourceNames) {
        return slaveDataSourceNames.get(new Random().nextInt(slaveDataSourceNames.size()));
    }
}
